dog in the manger vs disparagement

dog in the manger and disparagement both are nouns.

Word	Noun	Adjective	Verb	Adverb
dog in the manger	Yes	No	No	No
disparagement	Yes	No	No	No

dog in the manger (noun)	disparagement (noun)
someone who prevents you from enjoying something that they themselves have no need for	the act of speaking contemptuously of
	a communication that belittles somebody or something